Java工具類——把金額轉換成漢字大寫金額

class MoneyFormat{
     private final String [] pattern ={"零","壹","貳","叄","肆","伍","陸","柒","捌","玖"};
     private final String [] cPattern ={"","拾","佰","仟","萬","拾","佰","仟","億"};
     private final String [] cfPattern = {"","角","分"};
     private final String ZEOR = "零";
     public MoneyFormat(){
         System.out.println("run...");

     }

     public String format(String moneyString){
      int dotPoint = moneyString.indexOf("."); //判斷是否爲小數
      String moneyStr;
      if(dotPoint != -1){
       moneyStr = moneyString.substring(0,moneyString.indexOf("."));
      }
      else{
       moneyStr = moneyString;
      }
      StringBuffer fraction = null;   //小數部分的處理,以及最後的yuan.
      StringBuffer ms = new StringBuffer();
      for(int i = 0;i < moneyStr.length();i++){
       ms.append(pattern[moneyStr.charAt(i) - 48]); //按數組的編號加入對應大寫漢字
      }

      int cpCursor = 1;
      for(int j = moneyStr.length() - 1;j > 0;j--){
       ms.insert(j,cPattern[cpCursor]);   //在j之後加字符,不影響j對原字符串的相對位置
                  //只是moneyStr.length()不斷增加
                  //insert(j,"string")就在j位置處插入,j=0時爲第一位
       cpCursor = cpCursor == 8?1:cpCursor + 1;    //億位之後重新循環
      }


      while(ms.indexOf("零拾") != -1){  //當十位爲零時用一個"零"代替"零拾"
                //replace的起始於終止位置
       ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZEOR);
      }
      while(ms.indexOf("零佰") != -1){  //當百位爲零時,同理
       ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZEOR);
      }
      while(ms.indexOf("零仟") != -1){  //同理
       ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZEOR);
      }
      while(ms.indexOf("零萬") != -1){  //萬需保留，中文習慣
       ms.replace(ms.indexOf("零萬"),ms.indexOf("零萬") + 2,"萬");
      }
      while(ms.indexOf("零億") != -1){  //同上
       ms.replace(ms.indexOf("零億"),ms.indexOf("零億") + 2,"億");
      }
      while(ms.indexOf("零零") != -1){//有連續數位出現零，即有以下情況，此時根據習慣保留一個零即可
       ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);
      }
      while(ms.indexOf("億萬") != -1){  //特殊情況，如:100000000,根據習慣保留高位
       ms.replace(ms.indexOf("億萬"),ms.indexOf("億萬") + 2,"億");
      }
      while(ms.lastIndexOf("零") == ms.length()-1){  //當結尾爲零j，不必顯示,經過處理也只可能出現一個零
          if(ms.indexOf("零") == -1){
              ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);
          }else{
              break;
          }
      }


      int end;
      if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小數的進入
       String fs = moneyString.substring(dotPoint + 1,moneyString.length());
       if(fs.indexOf("00") == -1 || fs.indexOf("00") >= 2){//若前兩位小數全爲零，則跳過操作
        end = fs.length() > 2?2:fs.length();  //僅保留兩位小數
        fraction = new StringBuffer(fs.substring(0,end));
        for(int j = 0;j < fraction.length();j++){
         fraction.replace(j,j+1,this.pattern[fraction.charAt(j) - 48]); //替換大寫漢字
        }
        for(int i = fraction.length();i > 0;i--){  //插入中文標識
         fraction.insert(i,cfPattern[i]);
        }
        fraction.insert(0,"元");      //爲整數部分添加標識
       }
       else{
        fraction = new StringBuffer("元整");
       }

      }
      else{
       fraction = new StringBuffer("元整");
      }

      ms.append(fraction);         //加入小數部分
      return ms.toString();
     }




     public static void main(String [] ar){
      System.out.println(new MoneyFormat().format("10005022.123009"));
      System.out.println(new MoneyFormat().format("0.12"));
     }
    }

轉自【http://www.open-open.com/lib/view/open1400206687504.html】